U.S. patent number 11,150,698 [Application Number 16/400,167] was granted by the patent office on 2021-10-19 for bypass pathway for providing auxiliary power from a docking station.
This patent grant is currently assigned to Dell Products, L.P.. The grantee listed for this patent is Dell Products, L.P.. Invention is credited to Marcin M. Nowak, Merle Jackson Wood, III.
United States Patent |
11,150,698 |
Wood, III , et al. |
October 19, 2021 |
Bypass pathway for providing auxiliary power from a docking
station
Abstract
A docking station according to embodiments provides power to an
Information Handling System (IHS) coupled to the docking station.
The docking station includes a first power circuit supporting a
first power output according to a power delivery protocol limited
to a first power level. The docking station also includes a second
power circuit supporting a second power output for providing the
input power of the docking station to the IHS. A controller of the
docking station determines whether the IHS requires power using the
power delivery protocol and selects the operation of the first or
second power circuit. The docking station may support dual of such
selectable power pathways using a docking cable joined from two
individual cables, where each cable provides a separate power
and/or data coupling. The docking station thus supports powering
devices according to a power delivery protocol or using the input
power to the docking station.
Inventors: |
Wood, III; Merle Jackson (Round
Rock, TX), Nowak; Marcin M. (Round Rock, TX) |
Applicant: |
Name |
City |
State |
Country |
Type |
Dell Products, L.P. |
Round Rock |
TX |
US |
|
|
Assignee: |
Dell Products, L.P. (Round
Rock, TX)
|
Family
ID: |
73016032 |
Appl.
No.: |
16/400,167 |
Filed: |
May 1, 2019 |
Prior Publication Data
|
|
|
|
Document
Identifier |
Publication Date |
|
US 20200348723 A1 |
Nov 5, 2020 |
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
G06F
1/263 (20130101); G06F 13/385 (20130101); G06F
1/1632 (20130101); Y02D 10/00 (20180101) |
Current International
Class: |
G06F
1/16 (20060101); G06F 13/38 (20060101); G06F
1/26 (20060101) |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Wu; Jerry
Attorney, Agent or Firm: Fogarty LLP
Claims
The invention claimed is:
1. A docking station configured for providing power, the docking
station comprising: a DC power connector that receives a power
input from an AC power adapter, wherein the DC power connector is
coupled to a first power circuit and a second power circuit; the
first power circuit receiving power from the DC power connector and
providing a first power output to a laptop computer coupled to the
docking station; the second power circuit receiving power from the
DC power connector and providing a second power output to the
coupled laptop computer; and a main controller configured to
deliver power using the first power circuit and the second power
circuit; wherein the laptop computer is coupled to the docking
station via a first and second docking cables and wherein the
docking station routes power from the first power circuit to the
laptop computer via the first docking cable and routes power from
the second power circuit to the laptop computer via the second
docking cable and wherein first docking cable and the second
docking cable are received by adjacent ports of the laptop
computer.
2. The docking station of claim 1, wherein the laptop computer is
simultaneously coupled to the docking station via the first docking
cable and the second docking cable.
3. The docking station of claim 2, wherein the simultaneous
delivery of power by the first power circuit via the first docking
cable and by the second power circuit via the second docking cable
provides greater than 100 W of power to the coupled laptop
computer.
4. The docking station of claim 1, wherein the main controller is
further configured to determine whether the coupled laptop computer
supports dual pathway power delivery and further configured to use
the first power circuit and the second power circuit for providing
power to the laptop computer.
5. The docking station of claim 1, wherein a plug of the first
docking cable and a plug of the second docking cable are coupled to
form a single docking plug.
6. The docking station of claim 5, wherein the single docking plug
comprises a first connector and a second connector that s are
received by the adjacent ports of the laptop computer.
7. A method for providing power by a docking station, the method
comprising: receiving, via a DC power connector of the docking
station, a power input from an AC power adapter, wherein the DC
power connector is coupled to a first power circuit and to a second
power circuit; providing, by the first power circuit, a first power
output to the coupled laptop computer; providing, by the second
power circuit, a second power output to the coupled laptop
computer; and selecting, by a controller of the docking station,
power delivery by the docking station using the first power circuit
and the second power circuit, wherein the laptop computer is
coupled to the docking station via a first and second docking
cables and wherein the docking station routes power from the first
power circuit to the laptop computer via the first docking cable
and routes power from the second power circuit to the laptop
computer via the second docking cable, and wherein first docking
cable and the second docking cable are received by adjacent ports
of the laptop computer.
8. The method of claim 7, wherein the laptop computer is
simultaneously coupled to the docking station via the first docking
cable and the second docking cable.
9. The method of claim 8, wherein the simultaneous delivery of
power by the first power circuit via the first docking cable and by
the second power circuit via the second docking cable provides
greater than 100 W of power to the coupled laptop computer.
10. The method of claim 8, further comprising: interfacing, by the
controller, with the laptop computer to determine whether the
laptop computer supports dual-pathway power delivery; and when the
laptop computer supports dual-pathway power delivery, selecting, by
the controller, the first power circuit and the second power
circuit for providing the power to the laptop computer.
11. A system comprising: a first IHS (Information Handling System)
comprising a display, a memory, a storage drive, a processor and a
docking interface; and a docking station configured for providing
power to the first IHS, wherein the docking station comprises: a DC
power connector that receives a power input from an AC power
adapter, wherein the DC power connector is coupled to a first power
circuit and to a second power circuit; the first power circuit
receiving power from the DC power connector and providing a first
power output to the first IHS; the second power circuit receiving
power from the DC power connector and providing a second power
output to the first IHS; and a controller configured to determine
whether to deliver power to the first IHS using the first power
circuit and the second power circuit, wherein the laptop computer
is coupled to the docking station via a first and second docking
cables and wherein the docking station routes power from the first
power circuit to the laptop computer via the first docking cable
and routes power from the second power circuit to the laptop
computer via the second docking cable, and wherein first docking
cable and the second docking cable are received by adjacent ports
of the laptop computer.
12. A system of claim 11, the first docking cable and the second
docking cable are simultaneously coupled to the first IHS.
13. The system of claim 12, wherein the simultaneous delivery of
power by the first power circuit via the first docking cable and by
the second power circuit via the second docking cable provides
greater than 100 W of power output to the first IHS.
Description
FIELD
This disclosure relates generally to Information Handling Systems
(IHSs), and more specifically, to powering and charging IHSs.
BACKGROUND
As the value and use of information continues to increase,
individuals and businesses seek additional ways to process and
store information. One option is an information handling system
(IHS). An IHS generally processes, compiles, stores, and/or
communicates information or data for business, personal, or other
purposes. Because technology and information handling needs and
requirements may vary between different applications, IHSs may also
vary regarding what information is handled, how the information is
handled, how much information is processed, stored, or
communicated, and how quickly and efficiently the information may
be processed, stored, or communicated. The variations in IHSs allow
for IHSs to be general or configured for a specific user or
specific use such as financial transaction processing, airline
reservations, enterprise data storage, global communications, etc.
In addition, IHSs may include a variety of hardware and software
components that may be configured to process, store, and
communicate information and may include one or more computer
systems, data storage systems, and networking systems.
A docking station may be used to support the use of a mobile IHS
while at a workstation that is available for use at a fixed
location. The docking station may support use of the mobile IHS via
external displays and other I/O devices such as speakers, external
keyboards and a mouse. In addition, a docking station may be a
source of electrical power for a mobile IHS while the mobile IHS is
docked. A mobile IHS may utilize the power provided by a docking
station for powering the mobile IHS and for recharging the internal
batteries of the IHS. In some scenarios, such as at a public
workstation, a docking station may support multiple different types
of mobile IHSs.
SUMMARY
In various embodiments, a docking station is configured for
providing power to a first Information Handling System (IHS) that
is coupled to the docking station. The docking station includes: a
power input received from an AC power adapter; a first power
circuit supporting a first power output for providing the power
input to the first IHS according to a power delivery protocol
limiting the first power output to a first output power level; a
second power circuit supporting a second power output for providing
the power input to the first IHS; and a main controller configured
to interface with the first IHS to determine whether the IHS
requires power delivery according to the power delivery protocol
and further configured to select the operation of the first power
circuit or the second power circuit for providing power the first
IHS.
In additional docking station embodiments, the first IHS is coupled
to the docking station via a first docking cable and wherein the
docking station routes power output from the first power circuit
and the second power circuit to the first IHS via the first docking
cable. In additional docking station embodiments, the first power
circuit comprises a voltage regulator and a first port controller,
wherein the main controller is further configured to enable and
disable the first power circuit via configuration of the first port
controller. In additional docking station embodiments, the second
power circuit comprises a pair of load switching transistors,
wherein the main controller is further configured to enable and
disable the second power circuit via configuration of the pair of
load switching transistors. In additional embodiments, the docking
station further includes a third power circuit supporting a third
power output for providing the power input to the first IHS
according to the power delivery protocol limiting the second power
output to the first output power level; and a fourth power circuit
supporting a fourth power mode output for providing the power input
to the first IHS. In additional docking station embodiments, the
main controller is further configured to interface with the first
IHS to determine whether the first IHS supports dual pathway power
delivery and further configured to select the operation of the
third power circuit or the fourth power circuit for providing
addition power to the first IHS. In additional docking station
embodiments, the first IHS is further coupled to the docking
station via a second docking cable and wherein the docking station
routes power output from the third power circuit and the fourth
power circuit to the first IHS via the second docking cable. In
additional docking station embodiments, a plug of the first docking
cable and a plug of the second docking cable are coupled to form a
single docking plug. In additional docking station embodiments, the
single docking plug comprises a first connector and a second
connector and wherein the first connector and the second connector
are received by adjacent docking ports of the first IHS.
In various additional embodiments, a method provides power to a
first Information Handling System (IHS) that is coupled to a
docking station. The method includes: receiving a power input from
an AC power adapter; using a first power circuit supporting a first
power output to provide the power input to the first IHS according
to a power delivery protocol limiting the first power output to a
first output power level; using a second power circuit supporting a
second power output to provide the power input to the first IHS;
interfacing, by a controller of the docking station, with the first
IHS to determine whether the first IHS requires power delivery
according to the power delivery protocol; and selecting, by the
controller, the operation of the first power circuit or the second
power circuit for providing power the first IHS.
In additional method embodiments, the first IHS is coupled to the
docking station via a first docking cable and wherein the method
further comprises routing power output from the first power circuit
and the second power circuit to the first IHS via the first docking
cable. In additional method embodiments, the first power circuit
comprises a voltage regulator and a first port controller, and
wherein the method further includes enabling and disabling the
first power circuit via configuration of the first port controller
by the controller. In additional method embodiments, the second
power circuit comprises a pair of load switching transistors,
wherein the method further comprises enabling and disabling the
second power circuit via configuration, by the controller, of the
pair of load switching transistors. In method embodiments, the
method further includes using a third power circuit supporting a
third power output to provide the power input to the first IHS or a
second IHS according to the power delivery protocol limiting the
second power output to the first output power level; and using a
fourth power circuit supporting a fourth power mode output to
provide the power input to the first IHS or the second IHS. In
additional embodiments, the method further includes interfacing, by
the controller, with the second IHS to determine whether the second
IHS requires power delivery according to the power delivery
protocol; and selecting, by the controller, the operation of the
third power circuit or the fourth power circuit for providing power
the second IHS.
In various additional embodiments, a cable couples a docking
station to a first IHS (Information Handling System). The cable
includes: a cord comprising, at a first end received by a docking
port of the first IHS, a first plug and a second plug; the first
plug comprising a first connector for transmitting power and data
between the first IHS and the docking station and further
comprising a first coupling; and the second plug comprising a
second connector for transmitting additional power and additional
data between the IHS and the docking station and further comprising
a second coupling, wherein the first plug and the second plug are
joined to form a single docking plug by mating of the first
coupling and the second coupling.
In additional cable embodiments, the first coupling and the second
coupling are magnets of opposing polarities. In additional cable
embodiments, the first connector and the second connector of the
single docking plug are received by adjacent docking ports of the
first IHS. In additional cable embodiments, the first connector and
the second connector are USB-C connectors received by USB-C ports
of the first IHS configured as docking ports. In additional cable
embodiments, the single docking plug is separated and the first
plug is received by a docking port of the first IHS and the second
plug is received by a power port of the second IHS.
BRIEF DESCRIPTION OF THE DRAWINGS
The present invention(s) is/are illustrated by way of example and
is/are not limited by the accompanying figures, in which like
references indicate similar elements. Elements in the figures are
illustrated for simplicity and clarity, and have not necessarily
been drawn to scale.
FIG. 1 is a block diagram depicting certain components of an IHS
operable according to various embodiments for use with a docking
station supporting dual bypass pathways for providing auxiliary
power.
FIG. 2A is a block diagram illustrating certain components of a
docking system including a docking station and an IHS.
FIG. 2B is an illustration of a first configuration of an
embodiment of an IHS docking cable that supports dual power
pathways.
FIG. 2C is an illustration of a second configuration of an
embodiment of an IHS docking cable that supports dual power
pathways.
FIG. 2D is an illustration of an embodiment of an IHS docking cable
that is coupled to an IHS and provides the IHS with dual power
pathways.
FIG. 3 is a block diagram illustrating certain components of a
docking system supporting a bypass pathway for providing auxiliary
power to an IHS.
FIG. 4 is a block diagram illustrating certain components of a
docking system supporting dual bypass pathways for providing
auxiliary power to an IHS.
DETAILED DESCRIPTION
For purposes of this disclosure, an Information Handling System
(IHS) may include any instrumentality or aggregate of
instrumentalities operable to compute, calculate, determine,
classify, process, transmit, receive, retrieve, originate, switch,
store, display, communicate, manifest, detect, record, reproduce,
handle, or utilize any form of information, intelligence, or data
for business, scientific, control, or other purposes. For example,
an IHS may be a personal computer (e.g., desktop or laptop), tablet
computer, mobile device (e.g., Personal Digital Assistant (PDA) or
smart phone), server (e.g., blade server or rack server), a network
storage device, or any other suitable device and may vary in size,
shape, performance, functionality, and price. An IHS may include
Random Access Memory (RAM), one or more processing resources such
as a Central Processing Unit (CPU) or hardware or software control
logic, Read-Only Memory (ROM), and/or other types of nonvolatile
memory. Additional components of an IHS may include one or more
disk drives, one or more network ports for communicating with
external devices as well as various I/O devices, such as a
keyboard, a mouse, touchscreen, and/or a video display. An IHS may
also include one or more buses operable to transmit communications
between the various hardware components.
As described, an IHS may utilize a docking station in order to
access external I/O devices. In addition, a docking station may
supply an IHS with electrical power that may be used to power the
IHS and to recharge the internal batteries of the IHS. A docking
station according to embodiments may support docking, and thus
power delivery, for various different types of IHSs. For instance,
in some embodiments, a docking station may support power delivery
for IHSs conforming to the requirements of a power delivery
protocol, such as the USB (Universal Serial Bus) power delivery
specification. In such embodiments, a docking station my also
support power delivery via a bypass auxiliary power delivery
pathway via which certain IHSs may be provided power in excess of
the supported power delivery protocol. In addition, a docking
station according to embodiments may support dual power delivery
pathways that may be used to power a single IHS or to separately
power different IHSs. As described in additional detail with regard
to the below embodiments, the docking station may provide certain
IHSs with auxiliary power via these dual power pathways.
FIG. 1 is a block diagram illustrating certain components of an IHS
100 configured according to certain embodiments for use with a
docking station supporting dual bypass pathways for providing the
IHS 100 with auxiliary power. As described, a mobile IHS may
utilize a docking station from which the mobile IHS may receive
power and may support various I/O devices, such as external
displays, keyboards and mice. In certain embodiments IHS 100 may
include a docking interface 114 by which the IHS 100 may receive
power, receive inputs from external input devices and transmit
outputs to external output devices. In certain embodiments, docking
interface 114 may include logic that executes program instructions
to perform certain of the operations disclosed herein for
interfacing with a docking station supporting dual bypass pathways
for providing auxiliary power. While a single IHS 100 is
illustrated in FIG. 1, IHS 100 may be a component of an enterprise
system that may include any number of additional IHSs that may also
be configured in the same or similar manner to IHS 100.
IHS 100 includes one or more processors 101, such as a Central
Processing Unit (CPU), that execute code retrieved from a system
memory 105. Although IHS 100 is illustrated with a single processor
101, other embodiments may include two or more processors, that may
each be configured identically, or to provide specialized
processing functions. Processor 101 may include any processor
capable of executing program instructions, such as an Intel
Pentium.TM. series processor or any general-purpose or embedded
processors implementing any of a variety of Instruction Set
Architectures (ISAs), such as the x86, POWERPC.RTM., ARM.RTM.,
SPARC.RTM., or MIPS.RTM. ISAs, or any other suitable ISA.
In the embodiment of FIG. 1, the processor 101 includes an
integrated memory controller 118 that may be implemented directly
within the circuitry of the processor 101, or the memory controller
118 may be a separate integrated circuit that is located on the
same die as the processor 101. The memory controller 118 may be
configured to manage the transfer of data to and from the system
memory 105 of the IHS 100 via a high-speed memory interface
104.
The system memory 105 that is coupled to processor 101 provides the
processor 101 with a high-speed memory that may be used in the
execution of computer program instructions by the processor 101.
Accordingly, system memory 105 may include memory components, such
as such as static RAM (SRAM), dynamic RAM (DRAM), NAND Flash
memory, suitable for supporting high-speed memory operations by the
processor 101. In certain embodiments, system memory 105 may
combine both persistent, non-volatile memory and volatile memory.
In certain embodiments, the system memory 105 may be comprised of
multiple removable memory modules.
IHS 100 utilizes a chipset 103 that may include one or more
integrated circuits that are connect to processor 101. In the
embodiment of FIG. 1, processor 101 is depicted as a component of
chipset 103. In other embodiments, all of chipset 103, or portions
of chipset 103 may be implemented directly within the integrated
circuitry of the processor 101. Chipset 103 provides the
processor(s) 101 with access to a variety of resources accessible
via bus 102. In IHS 100, bus 102 is illustrated as a single
element. Various embodiments may utilize any number of buses to
provide the illustrated pathways served by bus 102.
As illustrated, a variety of resources may be coupled to the
processor(s) 101 of the IHS 100 through the chipset 103. For
instance, chipset 103 may be coupled to a network interface 109
that may support different types of network connectivity. In
certain embodiments, IHS 100 may include one or more Network
Interface Controllers (NIC), each of which may implement the
hardware required for communicating via a specific networking
technology, such as Wi-Fi, BLUETOOTH, Ethernet and mobile cellular
networks (e.g., CDMA, TDMA, LTE). As illustrated, network interface
109 may support network connections by wired network controllers
122 and wireless network controller 123. Each network controller
122, 123 may be coupled via various buses to the chipset 103 of IHS
100 in supporting different types of network connectivity, such as
the network connectivity utilized in applications of the operating
system of IHS 100.
Chipset 103 may also provide access to one or more integrated
display device(s) 108 via graphics processor 107. IHS 100 may also
support use of one or more external displays, such as external
monitors that may be coupled to IHS 100 via a docking interface
114. In certain embodiments, graphics processor 107 may be
comprised within a video or graphics card or within an embedded
controller installed within IHS 100. In certain embodiments,
graphics processor 107 may be integrated within processor 101, such
as a component of a system-on-chip. Graphics processor 107 may
generate display information and provide the generated information
to an integrated display device 108 coupled to IHS 100 or to an
external display accessed via a docking station coupled to IHS 100
via the docking interface 114.
The integrated display devices 108 and any external display devices
may utilize LCD, LED, OLED, or other display technologies. In
certain embodiments, the integrated display device 108 may be
capable of receiving touch inputs such as via a touch controller
that may be an embedded component of the display device 108 or
graphics processor 107, or may be a separate component of IHS 100
accessed via bus 102. As illustrated, IHS 100 may support an
integrated display device 108, such as a display integrated into a
laptop, tablet, 2-in-1 convertible device, or mobile device.
Chipset 103 also provides processor 101 with access to one or more
storage devices 119. In various embodiments, storage devices 119
may be integral to the IHS 100, or may be external to the IHS 100.
In certain embodiments, storage device 119 may be accessed via a
storage controller that may be an integrated component of the
storage device. Storage device 119 may be implemented using any
memory technology allowing IHS 100 to store and retrieve data. For
instance, storage device 119 may be a magnetic hard disk storage
drive or a solid-state storage drive. In certain embodiments,
storage device 119 may be a system of storage devices, such as a
cloud drive accessible via network interface 109.
As illustrated, IHS 100 also includes a BIOS (Basic Input/Output
System) 117 that may be stored in a non-volatile memory accessible
by chipset 103 via bus 102. Upon powering or restarting IHS 100,
processor(s) 101 may utilize BIOS 117 instructions to initialize
and test hardware components coupled to the IHS 100. The BIOS 117
instructions may also load an operating system for use by the IHS
100. The BIOS 117 provides an abstraction layer that allows the
operating system to interface with the hardware components of the
IHS 100. The Unified Extensible Firmware Interface (UEFI) was
designed as a successor to BIOS. As a result, many modern IHSs
utilize UEFI in addition to or instead of a BIOS. As used herein,
BIOS is intended to also encompass UEFI.
In certain embodiments, chipset 103 may utilize one or more I/O
controllers 110 that may each support hardware components such as
integrated user I/O devices 111. For instance, I/O controller 110
may provide access to one or more integrated user I/O devices 111
such as a keyboard, touchpad, touchscreen, microphone, speakers,
camera and other input and output devices that may be integrated
components of IHS 100. In certain embodiments, additional user I/O
devices may be supported via wireless connections supported by a
wireless network controller 123 of the IHS 100.
Other components of IHS 100 may include one or more I/O ports 116
the support removeable couplings with various types of peripheral
external devices. For instance, I/O 116 ports may include USB
(Universal Serial Bus) ports and USB-C ports, by which a variety of
external devices may be coupled to IHS 100. I/O ports 116 may
include various types of ports and couplings that support
connections with external devices and systems, either through
temporary couplings via ports, such as USB ports, accessible to a
user via the enclosure of the IHS 100, or through more permanent
couplings via expansion slots provided via the motherboard or via
an expansion card of IHS 100, such as PCIe slots.
In various embodiments, IHS 100 may be coupled to a docking station
via an I/O port 116, such as a USB-C port, that may serve as a
docking interface 114. Other embodiments may utilize other types of
I/O ports as a docking interface for coupling IHS 100 to a docking
station. As described, a docking station may provide IHS 100 with
power via a docking interface 114. In certain embodiments, the
docking interface 114 may also support data transmissions between
the IHS 100 and the docking station. In certain embodiments in
which the docking interface 114 is a USB-C port, IHS 100 may
support power delivery via the docking interface 114 that conforms
to the USB power delivery specification. As described below, a
docking station according to embodiments may be configured to
support power delivery to IHS 100 according to the USB power
delivery protocol. However, in certain embodiments, IHS 100 may
additionally or alternatively support power delivery that is not
provided according to the USB power delivery protocol. Accordingly,
the docking station according to embodiments may be further
configured to support power delivery to IHS 100 in a manner that
bypasses the restrictions of the power delivery protocol and
instead provide IHS 100 with the DC input power received from an AC
adapter used to power the docking station.
In the illustrated embodiment, IHS 100 also includes a power
circuit 124 that receives power inputs used for powering IHS 100
and for charging batteries from which the IHS 100 operates. IHS 100
may include a power port to which an AC adapter may be coupled. As
described, IHS 100 may also include a docking interface 114 by
which power may be received by IHS 100. For instance, IHS 100 may
include a USB-C port that may serve as a docking interface 114 that
supports the power delivery from a docking station. In such
embodiments, the power received from the docking interface 114 may
be provided to the power circuit 124 for powering IHS 100 and
charging its batteries.
As described in additional detail below, IHS 100 may also support a
docking interface 114 that is comprised of two distinct ports that
may be utilized separately or in combination to provide a dual
pathway power and data connection with the docking station. For
instance, IHS 100 may include two USB-C ports that may each receive
USB-C connectors of a docking cable that is used to couple the IHS
100 to the docking station. In such embodiments, the use of the
docking interface 114 comprised of dual docking ports allows the
docking station to provide IHS 100 with more power than would be
possible using a single docking port.
As described with regard to embodiments of FIGS. 3 and 4, in
certain embodiments, the docking interface 114 may support queries
that are utilized by the docking station to determine the power
delivery and requirements of IHS 100. In such embodiments, docking
interface 114 may query the power circuit 124 in order to determine
the power transfer configurations that may be supported by the IHS
100. For instance, docking interface 114 may report that IHS 100
requires power delivery according to the USB power delivery
specification, or may report that IHS 100 may support power routed
directly from a supported AC adapter. Additionally, docking
interface 114 may also report whether IHS 100 include support for
power delivery via dual power delivery couplings, such as delivery
of power via dual USB-C ports.
In various embodiments, an IHS 100 does not include each of the
components shown in FIG. 1. In various embodiments, an IHS 100 may
include various additional components in addition to those that are
shown in FIG. 1. Furthermore, some components that are represented
as separate components in FIG. 1 may in certain embodiments instead
be integrated with other components. For example, in certain
embodiments, all or a portion of the functionality provided by the
illustrated components may instead be provided by components
integrated into the one or more processor(s) 101 as a
systems-on-a-chip.
FIG. 2A is a block diagram illustrating certain components of a
docking system that includes a docking station 260 and an IHS 205.
In many scenarios, an IHS 205 that utilizes a docking station 260
may be a mobile IHS that may be used at various locations,
including at a workstation at which docking station 260 is
provided. As illustrated, a docking station 260 may provide a
mobile IHS 205 with use of one or more external displays 225. A
docking station 260 may also provide use of various user I/O
devices 235, such as a mouse and keyboard, which may be coupled to
the docking station 260 via wired or wireless connections. While
coupled to docking station 260, mobile IHS 205 may be configured
such that all user inputs and outputs generated in the operation of
the mobile IHS 205 are provided via docking station 260, while some
or all of the user input and output capabilities of mobile IHS 205
may be disabled.
As illustrated, a mobile IHS 205 may be coupled to a docking
station 260 via a docking cable 215. In certain instances, the
docking station 260 includes a docking interface 220 that receives
one end of the docking cable 215 and the mobile IHS 205 includes a
docking port 210 that receives the other end of the docking cable
215. Other types of docking interfaces require a mobile IHS to be
plugged directly to a docking station, such as via mating of an
external connector of the mobile IHS with a compatible coupling
provided by the docking station. In FIG. 2, a docking cable 215 is
used to connect the docking station 260 and the mobile IHS 205.
Also as illustrated, a docking station 260 may be coupled to an AC
adapter 230 and by which the docking station 260 receives DC power.
The docking station 260 may use the received DC power to provide
power to mobile IHS 205. Other types of docking stations may
transfer power to an IHS via a direct power coupling or through a
dedicated power cord. In the docking station 260 of FIG. 2, the
single docking cable 215 is used to transmit both the DC power
provided to mobile IHS 205 and the data transmitted between the
docking station 260 and the mobile IHS. For instance, a USB-C cable
may be utilized to connect the docking station 260 to a USB-C port
210 of the mobile IHS 205. In certain instances, the power that may
be provided via a single docking cable 215 may be insufficient to
fully power certain mobile IHSs 205.
FIG. 2B is an illustration of an embodiment of an IHS docking cable
240 that supports dual power pathways for providing power to mobile
IHSs that may utilize more power than can be provided via a docking
cable that includes a single power pathway. As illustrated, the
docking cable 240 may include two branches, each including its own
plug 245a and 245b. Although not illustrated, in certain
embodiments the two branches of docking cable 240 may be joined to
form a single cable for a substantial portion of the length of the
power cable. In certain embodiments, both ends of docking cable 240
may be identical and may operate as described with regard to FIGS.
2B-C. In other embodiments, the end of the docking cable 240 that
is received by the mobile IHS may operate as described with regard
to FIGS. 2B-C and the other end of the docking cable received by
the docking station may operate differently.
As illustrated, the docking cable 240 includes two plugs 245a and
245b, each of which provides a power and data coupling between a
docking station and a mobile IHS. Each of the plugs 245a and 245b
includes a connector 255a and 255b that is received by a compatible
docking port of the mobile IHS. In certain embodiments, the
connectors 255a and 255b are USB-C connectors that are received by
USB-C ports of the docked mobile IHS. In certain embodiments, each
of the plugs 245a and 245b of the docking cable may include magnets
250a and 250b on corresponding surfaces of the respective plugs
245a and 245b. Although a single magnet 250a and 250b is
illustrated on each of the plugs 245a and 245b, certain embodiments
may utilize multiple magnets in each of the plugs 245a and 245b,
where the polarity and positioning of each magnet of a plug is
selected in order for each magnet to interface with a corresponding
magnet on the other plug. In other embodiments, mechanisms other
than magnets may be utilized to join individual plugs into a single
docking plug. For instance, each plug may include corresponding
tongue and groove structures that allow a user to slide the two
plugs together until they are temporarily joined to form a single
docking plug.
FIG. 2C is an illustration of a second configuration of an
embodiment of an IHS docking cable 240 that supports dual power
pathways. In FIG. 2C, the two branches of the docking cable 240
have been joined to form a single plug that includes two connectors
255a and 255b. In certain embodiments, each of the two connectors
255a and 255b may be a USB-C connector. The single docking plug may
be formed via the coupling of the corresponding magnets of the
individual plugs 245a and 245b. Join in this manner, the individual
plugs 245a and 245b may be manipulated by the user as a single
docking plug, thus freeing the user from having to manage multiple
plugs for docking an IHS. Other embodiments may utilize additional
or alternative mechanisms than the described magnets for joining
the individual plugs 245a and 245b into a single docking plug.
FIG. 2D is an illustration of an embodiment of an IHS docking cable
240 that is coupled to an IHS and provides the IHS with dual power
pathways. As illustrated, the docking plug formed from joining the
individual plugs 245a and 245b may be received by docking ports
supported by the IHS 265. To receive the joined docking plug, the
IHS 265 includes two adjacent docking ports that each receive one
of the connectors of the joined docking plug. Accordingly, in
certain embodiments, the individual plugs 245a and 245b may
designed such that respective connectors of a jointed docking plug
are spaced at a distance corresponding to the distance between the
adjacent docking ports supported by certain types of IHSs. In
certain embodiments, the docking plug may be utilized in
non-adjacent ports of an IHS, in which case the individual plugs
245a and 245b may be separated and each branch of the docking cable
may be routed to one of the non-adjacent ports.
Using the docking cable of FIGS. 2B-D, an IHS 265 may receive a
single plug that includes two connectors, where each connector
provides a separate power and data pathway between the docking
station and the IHS. As described in additional detail below, in
certain embodiments, a docking station may support dual power
pathways via the two connectors 255a and 255b, where the dual power
pathways may provide a docked IHS with a doubling of the power that
may be drawn from the docking station via a single power pathway
docking cable. In addition, a docking station according to
embodiments may support providing auxiliary bypass power via each
of the individual connectors 255a and 255b of the docking plug,
thus providing the IHS with additional, auxiliary amounts of
power.
FIG. 3 is a block diagram illustrating certain components of a
docking system supporting a bypass pathway for providing auxiliary
power to a mobile IHS 305 coupled to a docking station 360. In the
illustrated embodiment, a mobile IHS 305 may be coupled to a
docking station 360 via a single docking cable 315 that is received
at one end by a docking port 310 of the IHS and on the other end by
a docking interface 320 of the docking station. In certain
embodiments, the docking cable 315 may be a USB-C cable that is
received by USB-C ports of the mobile IHS 305 and the docking
station 360. As described, the docking cable 315 may be used to
transfer power from the docking station 360 to the mobile IHS 305
and may be additionally used to transfer data between the docking
station 360 and the mobile IHS 305.
In providing power to the mobile IHS 305, the docking station 360
may receive power via an AC adapter 330 that is coupled to a DC
power connector 335 supported by the docking station. In certain
embodiments, a soft start circuit 340 may be utilized to limit the
rate of current flows to the power circuitry of the docking station
360 during startup conditions when input power is being initially
received from the AC adapter 330. The input power received from the
DC power connector 335 may then be routed via one of two power
pathways to the docking interface 320 for use by the coupled mobile
IHS 305. As described, the docking cable 315 by which the mobile
IHS is coupled to the docking station 360 may be a USB-C cable.
Accordingly, the docking station 360 may support power and data
transfers that conform to USB specifications, such as the USB 3.1
data transfer specification and the USB power delivery
specification. In support of such USB-C power transfers, the
docking station 360 may include a protocol compliant power pathway
375 that generates power transfers compliant with the USB power
delivery specification.
As illustrated, the protocol compliant power pathway 375 may
utilize a voltage regulator 370 that converts the input DC power
received from the DC power connector 335 to a voltage supported by
a power delivery protocol. For instance, a voltage regulator 370
supporting the USB power delivery specification may be configured
to generate industry supported output voltages, such as output
voltages of 5V, 9V, 15V and 20V. The output generated by voltage
regulator 370 is received by a port controller 365 which is
configured to generate the output voltage V.sub.BUS at a current
that is conforms the power delivery protocol in use by the mobile
IHS 305. In compliance with a power delivery protocol such as the
USB power delivery specification, the port controller 365 may be
limited in the output current that may be provided. For instance,
compliance with the USB power delivery specification may restrict
the output of port controller 365 to currents that are no more than
5 A or overall power output greater than 100 W. Smaller currents
and power output may also be supported, but port controller 365 may
include circuitry that prevents transmission at current levels
greater than 5 A or power output greater than 100 W. In this
manner, docking station 360 may utilize the protocol compliant
power pathway to support docking of a mobile IHS 305 that utilizes
a specific power delivery protocol, such as the USB power delivery
specification.
Certain IHSs may be capable of utilizing power in excess of the
power output supported by the power delivery protocol that is
supported by the protocol compliant power pathway 375. Accordingly,
in addition to supporting power transfers compliant with a protocol
such as the USB power delivery specification, docking station 360
may utilize a bypass auxiliary power pathway 380 that may deliver
greater power to a mobile IHS 305 than is possible using the power
compliant power pathway 375. As illustrated, the bypass auxiliary
power pathway 380 may receive DC input power from the DC power
connector 335 and may utilize a pair of load switching transistors
390a and 390b that may be operated by switching logic 385 to
provide the DC input power from DC power connector 335 directly to
the mobile IHS 305. In this manner, the power compliant power
pathway may be used to route power (commonly 240 W of power
provided at 19.5V) directly from the AC adapter 330 to the mobile
IHS 305.
In certain embodiments, docking station 360 may include an embedded
controller 325 that executes instructions that are operable for
determining whether the mobile IHS 205 coupled to the docking
interface 320 requires power delivery that is compliant with a
particular power delivery protocol, or whether the mobile IHS 205
supports auxiliary power that may be provided by bypassing the
restrictions of the power delivery protocol. For instance, the
embedded controller 325 may detect the coupling of an IHS to
docking interface 320. Upon detecting the docking of mobile IHS
305, the embedded controller 325 may exchange messages with the
mobile IHS 305 in order to determine the power requirements of the
mobile IHS. For instance, the embedded controller 325 may
interrogate the power capabilities of the mobile IHS 305 using
vendor defined messages supported by the signaling protocol that is
used to support the data transmission capabilities of the docking
cable 315.
In scenarios where the embedded controller 325 determines that the
mobile IHS 305 requires power delivery according to a power
delivery protocol supported by the docking station 360, the
embedded controller 325 activates the port controller 365 of the
protocol compliant power pathway 375. In addition, the embedded
controller 325 directs the switching logic 385 of the bypass
auxiliary power pathway 380 to configure the load switching
transistors 390a and 390b to prevent current from flowing in either
direction along the bypass auxiliary power pathway 380. Based on
such configurations directed by the embedded controller 325, the
docking station 360 may be used to provide power interchangeably to
different types of docked IHSs, where some types of docked IHSs may
be provided power according to a power delivery protocol and other
types of docked IHSs may be provided auxiliary power directly from
the DC power source of the docking station 360.
In addition to providing a pathway for supporting greater power
outputs then supported by a power delivery protocol, the bypass
auxiliary power pathway 380 provides several advantages in the
operation of the docking station 360. In many instances, a voltage
regulator 370 may be implemented as a buck-boost voltage regulator
that converts an input voltage to a particular output voltage in a
manner that dissipates a certain amount of power and generates
heat. In comparison, the load switching transistors 390a and 390b
transmit received DC power directly to the mobile IHS 305, thus
providing a more efficiently power delivery pathway than is
possible via the voltage regulator 370. Due to the increased
efficiency provided by the bypass auxiliary power pathway, less
heat is generated. As a result, docking station 360 may operate
with decreased cooling requirements, thus allowing for slower fan
speeds and less fan noise when compared to power delivery using the
power compliant power pathway.
Besides providing increased efficiency compared to the protocol
compliant power pathway 375, the bypass auxiliary power pathway 380
may also be used to support greater peak currents than are
supported by the protocol compliant power pathway 375. As
described, in instances where the power compliant power pathway 375
provides power outputs according to the USB power delivery
specification, output currents may be limited to 5 A. Even when
unrestricted by a power delivery protocol, the circuitry required
to implement the power compliant power pathway 375 serves to limit
the peak currents that can be provided using this pathway.
Accordingly, the bypass auxiliary power pathway 380 may be used to
deliver greater peak currents than possible via a power compliant
power delivery pathway. Upon the embedded controller 325
determining that the docked mobile IHS 305 supports delivery of
power directly from the DC power source of the docking station 360,
the embedded controller 325 may configure the switching logic 385
to operate the load switching transistors 390a and 390b to allow
for bypass auxiliary power delivery, thus proving mobile IHS 305
with a power supply that supports greater peak currents that are
supported by the power compliant power pathway.
FIG. 4 is a block diagram illustrating certain components of a
docking system supporting dual bypass pathways that are each
capable of providing auxiliary power to a mobile IHS 405. As
described with regard to the dual-connector docking plug of FIGS.
2B-D, a docking cable according to embodiments may consist of two
separate cables 415a and 415b, each of which may support both data
and power transmissions. As described with regard to FIG. 1, an IHS
may include dual ports that support docking. In this manner, the
mobile IHS 405 includes two docking ports 410a and 410b. In certain
embodiments, each of the docking ports 410a and 410b may be USB-C
ports that receive USB-C connectors of the respective docking
cables 415a and 415b.
In certain embodiments, the docking ports 410a and 410b may be
located adjacent to each and may thus be compatible with the joined
docking plug of FIGS. 2B-D. In other embodiments, docking ports
410a and 410b may be positioned at nonadjacent locations of mobile
IHS 405, such as on opposite sides of mobile IHS 405. In other
embodiments, docking ports 410a and 410b may be located on
different IHSs, in which case the docking station 460 may provide
power to two different IHSs via separate docking cables 415a and
415b.
As with the docking station of FIG. 3, the docking station 460
receive DC power from an AC adapter 430 at a DC power connector
435. The docking station 460 also includes a soft start circuit 340
that may limit current flows to the power circuitry of the docking
station 360 during startup conditions. As illustrated, the docking
station 460 of FIG. 4 includes two bypass auxiliary pathways 480a
and 480b. As with the docking station of FIG. 3, the embedded
controller 425 of docking station 460 may utilize vendor defined
messages transmitted via docking cables 415a and/or 415b in order
to determine the power capabilities of the mobile IHS 405. In
certain scenarios, the interrogation by embedded controller 425 may
determine that docking cables 415a and 415b are coupled to
different IHSs, in which case the embedded controller 425 may
interrogate each of the IHSs in order to determine their respective
power delivery capabilities. Based upon the interrogation by the
embedded controller 425, one or both of the bypass auxiliary
pathways 480a and 480b may be activated.
If one or both of the bypass auxiliary pathways 480a and/or 480b is
activated, the embedded controller 425 also disables the power port
controllers 465a and/or 465b of the corresponding protocol
compliant pathway 475 that is being bypassed. For instance, if the
interrogation messages transmitted by the embedded controller 425
via the docking cables 415a and 415b indicate that both docking
cables are coupled to the same mobile IHS and the mobile IHS is
support auxiliary power transfers, both power port controllers 465a
and 465b may be disabled, thus preventing flow of current in either
direction via these power port controllers. In another scenario, if
the interrogation messages transmitted by the embedded controller
425 indicate that docking cable 415a is coupled to a docking port
410a that requires USB compliant power delivery and docking cable
415b is coupled to a docking port 410b that supports auxiliary
power transfers, the embedded controller 425 may disable bypass
auxiliary pathway 480a and also disable power port controller 465b.
Configured in this manner, the docking station thus supports one
protocol compliant power delivery pathway and one bypass auxiliary
power delivery pathway. In some instances, the power delivery
pathways may support docking by one IHS or contemporaneous docking
by two separate IHSs.
In certain scenarios, the interrogation by embedded controller 425
may indicate that the mobile IHS 405 is configured to receive power
according to a power delivery protocol supported by the docking
station and does not support auxiliary power in excess of the
limits specified by the power delivery protocol. In such instances,
the embedded controller 425 disables both of the bypass auxiliary
pathways 480a and 480b. As described with regard to FIG. 3, the
embedded controller 425 may disable a bypass auxiliary pathway 480a
and/or 480b by directing the respective switching logic 485a and/or
485b to configure the operation of the load switching transistors
490a and/or 490b to prevent the flow of current in either direction
along the disabled bypass pathways. By disabling an auxiliary
bypass pathway 480a or 480b, power is provided to the respective
docking cable 415a or 415b via the protocol compliant power pathway
475.
As illustrated, the protocol compliant power pathway 475 may
include a single voltage regulator 470 that supports regulated
voltage outputs by each of the power port controllers 465a and
465b. Based on the configuration by the embedded controller 425,
the power port controllers 465a and 465b may be individually
enabled or disabled. As with the embodiment of FIG. 3, in scenarios
where embedded controller 425 determines that the mobile IHS 405
requires power inputs according to a power delivery protocol, such
as the USB power delivery specification, the embedded controller
425 may configure one or both of the power port controllers 465a
and/or 465b to provide power to the mobile IHS 405 via a power
delivery protocol supported by the protocol compliant power
delivery pathway 475.
As described, certain IHSs may support power inputs in excess of
those that may be provided according to the power delivery protocol
supported by the protocol compliant power delivery pathway 475.
Accordingly, upon determining the mobile IHS 405 supports such
auxiliary power delivery, the embedded controller 425 may enable
one or both of the bypass auxiliary power pathways 480a and/or
480b. In scenarios where both bypass auxiliary pathways 480a and
480b are enabled, each bypass pathway delivers input DC power
received by the DC power connector 435 of the docking station 460
directly to the mobile IHS. Configured in this manner, each of the
docking cables 415a and 415b provide mobile IHS with a separate
source of DC power.
As described with regard to FIGS. 2B-D, a single docking cable may
be formed by joining two separate plugs such that the single
docking cable includes two separate connectors that may be received
by adjacent docking ports 410a and 410b of the mobile IHS 405. In
certain embodiments, such dual docking cables may be dual USB-C
docking cables. In scenarios where a dual USB-C docking cable 415a
and 415b is utilized and bypass auxiliary power pathways have been
configured for each docking cable, docking station 460 may provide
IHS 405 with over 100 W via each of the dual USB-C docking cables
415a and 415b. In such a configuration, the combined average power
delivered to mobile IHS 405 is thus greater than 200 W, with
delivery of peak power up to approximately 400 W. This allows for
docking of an IHS 405 use of a single docking plug, rather than
docking the IHS 405 using a USB-C connector for data transmissions
and a separate powering the IHS 405 using an AC adapter.
As described with regard to FIG. 3, the minimal circuitry required
to implement the bypass auxiliary power pathways provides for a
more efficient operation of the docking station compared to the use
of the power compliant power pathway. In scenarios, such as the
docking station 460 of FIG. 4, that utilize dual power delivery
pathways, the minimal circuitry required to implement the bypass
auxiliary power pathways allows for easier impedance matching of
the alternate pathways when compared to the power compliant power
pathways. For instance, slight differences in impedance of the
power port controllers 465a and 465b may result in large imbalances
of current flow when both power port controllers 465a and 465b are
enabled. Conversely, the relative simplicity of load switching
transistors utilized in the bypass auxiliary power pathways 480a
and 480b can be expected to result in smaller impedance mismatches
between the two bypass auxiliary power pathways 480a and 480b.
Accordingly, more balanced flow of current may be observed when
both bypass auxiliary power pathways 480a and 480b are enabled.
As described, the embedded controller 425 of the docking station
460 may be utilized to determine the power delivery requirements of
each of the docking ports 410a and 410b of the mobile IHS 405. In
various scenarios, the embedded controller 425 may determine that
an IHS 405 supports docking using dual power pathways, in which
case docking cable connectors are received at two power ports 410a
and 410b of the mobile IHS 405. In USB-C embodiments, each of the
dual power pathways also supports data transmissions between the
mobile IHS 405 and the docking station 460, where the data
transmissions are used to support the docking functions other than
power, such as the use of external displays and other I/O devices.
Accordingly, in scenarios where dual power delivery pathways are
being utilized, the embedded controller 425 may be configured to
support a data connection used for docking functions other than
power to a single docking cable.
In scenarios in which dual power pathways are enabled, a docking
station may restrict docking functions other than power to a single
docking cable, but may still support power delivery to additionally
IHSs. For instance, in certain embodiments, docking may be
supported for a first IHS via a first docking cable and power
delivery may be supported for a second IHS via a second docking
cable. In certain embodiments, power delivery by the docking
station for separate IHSs may be supported using two separate
docking cables or using the docking cable of FIGS. 2B-D with the
docking plug split into two separate plugs that are coupled to
different IHSs.
In scenarios in which dual power delivery pathways are enabled,
disconnection of one of the docking cables may indicate the need to
reconfigure the still connected docking cable. For instance,
embedded controller 425 may renegotiate the power delivery provided
to each of the docking ports 410a and 410b upon detecting a
disconnection of one of the docking cables 415a or 415b. In one
example, if docking cable 415a was configured for use in data
transmission supporting non-power docking functions and is
subsequently disconnected, embedded controller 425 may reconfigure
docking cable 415b for use in supporting both power and data
docking functions, albeit at a lower power than previously provided
using the dual power pathway connection.
It should be understood that various operations described herein
may be implemented in software executed by processing circuitry,
hardware, or a combination thereof. The order in which each
operation of a given method is performed may be changed, and
various operations may be added, reordered, combined, omitted,
modified, etc. It is intended that the invention(s) described
herein embrace all such modifications and changes and, accordingly,
the above description should be regarded in an illustrative rather
than a restrictive sense.
The terms "tangible" and "non-transitory," as used herein, are
intended to describe a computer-readable storage medium (or
"memory") excluding propagating electromagnetic signals; but are
not intended to otherwise limit the type of physical
computer-readable storage device that is encompassed by the phrase
computer-readable medium or memory. For instance, the terms
"non-transitory computer readable medium" or "tangible memory" are
intended to encompass types of storage devices that do not
necessarily store information permanently, including, for example,
RAM. Program instructions and data stored on a tangible
computer-accessible storage medium in non-transitory form may
afterwards be transmitted by transmission media or signals such as
electrical, electromagnetic, or digital signals, which may be
conveyed via a communication medium such as a network and/or a
wireless link.
Although the invention(s) is/are described herein with reference to
specific embodiments, various modifications and changes can be made
without departing from the scope of the present invention(s), as
set forth in the claims below. Accordingly, the specification and
figures are to be regarded in an illustrative rather than a
restrictive sense, and all such modifications are intended to be
included within the scope of the present invention(s). Any
benefits, advantages, or solutions to problems that are described
herein with regard to specific embodiments are not intended to be
construed as a critical, required, or essential feature or element
of any or all the claims.
Unless stated otherwise, terms such as "first" and "second" are
used to arbitrarily distinguish between the elements such terms
describe. Thus, these terms are not necessarily intended to
indicate temporal or other prioritization of such elements. The
terms "coupled" or "operably coupled" are defined as connected,
although not necessarily directly, and not necessarily
mechanically. The terms "a" and "an" are defined as one or more
unless stated otherwise. The terms "comprise" (and any form of
comprise, such as "comprises" and "comprising"), "have" (and any
form of have, such as "has" and "having"), "include" (and any form
of include, such as "includes" and "including") and "contain" (and
any form of contain, such as "contains" and "containing") are
open-ended linking verbs. As a result, a system, device, or
apparatus that "comprises," "has," "includes" or "contains" one or
more elements possesses those one or more elements but is not
limited to possessing only those one or more elements. Similarly, a
method or process that "comprises," "has," "includes" or "contains"
one or more operations possesses those one or more operations but
is not limited to possessing only those one or more operations.
* * * * *